Your journey begins in the heart of Yaughton, near the train station. This area is primarily focused on the story of Stephen Appleton, a scientist involved in the mysterious project. His narrative threads will lead you through the initial mysteries of the Rapture.
Begin by exploring the immediate vicinity of the train tracks and the station itself. Look for the shimmering light anomalies that indicate a memory sequence. These will often appear as glowing orbs or as shimmering outlines of people, which you can interact with to trigger a scene. Pay close attention to the dialogue and the environment for clues.